[JAVA] 순서쌍의 개수

 

 

 

 

class Solution {
    public int solution(int n) {
        int answer = 0;
        for(int i =1; i<=n; i++){ if(n%i==0) answer++; }
        return answer;
    }
}

 

 

 

 

 

 

import java.util.stream.IntStream;

class Solution {
    public int solution(int n) {
        return (int) IntStream.rangeClosed(1, n).filter(i -> n % i == 0).count();
    }
}